At the Vassar Sprint Invitational, Bard College junior Dio Tzortzis won three individual events, breaking the meet record in each - and also swam the third leg in the winning 200-medley relay. The versatile junior from Greece won the 100-back, the 400-IM and the 200-free. One of the meet records he broke was his own; one of the others had stood for 10 years.